body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: aliceblue;
}

.todo-app {
  text-align: center;
  width: 1080px;
  margin: 0 auto;
}

.todo-title {
  font-size: 35px;
  margin: 20px;
}

.todo-item-input {
  display: flex;
  justify-content: space-between;
}

.todo-container {
  border: 1px solid darkslategray;
  border-radius: 5px;
  padding: 8px;
}

.todo-container-list {
  display: flex !important;
  justify-content: space-between;
  padding: 10px !important;
  font-size: 15px;
  border-bottom: 1px solid #333 !important;
}

.todo-container-list:last-of-type {
  border-bottom: none !important;
}

.todo-item-operate {}

.todo-container-list-done {
  display: flex !important;
  justify-content: space-between;
  padding: 10px !important;
  font-size: 15px;
  text-decoration: line-through;
  background-color: lightgray;

}

.todo-filter {
  display: flex;

  margin: 40px 0 10px 0;

}